<!DOCTYPE html>



  


<html class="theme-next muse use-motion" lang="">
<head>
  <meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>
<meta name="theme-color" content="#222">









<meta http-equiv="Cache-Control" content="no-transform" />
<meta http-equiv="Cache-Control" content="no-siteapp" />
















  
  
  <link href="/lib/fancybox/source/jquery.fancybox.css?v=2.1.5" rel="stylesheet" type="text/css" />







<link href="/lib/font-awesome/css/font-awesome.min.css?v=4.6.2" rel="stylesheet" type="text/css" />

<link href="/css/main.css?v=5.1.4" rel="stylesheet" type="text/css" />


  <link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png?v=5.1.4">


  <link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png?v=5.1.4">


  <link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png?v=5.1.4">


  <link rel="mask-icon" href="/images/logo.svg?v=5.1.4" color="#222">





  <meta name="keywords" content="Hexo, NexT" />










<meta name="description" content="进制转换 二进制与十进制     人类（10进制） 猫咪（2进制）     1 1   2 10   3 11   4 100    算法：例子1例子2：例子3（小数） 0.1（10进制）无法转化为（2二进制）因为0.1在十进制是有限小数二进制中是无限小数 转换进制有可能将有限小数转换为无限小数  二进制与十六进制    十进制 ——&amp;gt; 二进制23（10）——&amp;gt; 10111（2）0.2">
<meta property="og:type" content="article">
<meta property="og:title" content="进制转换">
<meta property="og:url" content="http://yoursite.com/2018/03/20/二.进制转换/index.html">
<meta property="og:site_name" content="From&#39;s blog">
<meta property="og:description" content="进制转换 二进制与十进制     人类（10进制） 猫咪（2进制）     1 1   2 10   3 11   4 100    算法：例子1例子2：例子3（小数） 0.1（10进制）无法转化为（2二进制）因为0.1在十进制是有限小数二进制中是无限小数 转换进制有可能将有限小数转换为无限小数  二进制与十六进制    十进制 ——&amp;gt; 二进制23（10）——&amp;gt; 10111（2）0.2">
<meta property="og:locale" content="default">
<meta property="og:image" content="https://upload-images.jianshu.io/upload_images/11007474-c12d1e39b26d37e1.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/600">
<meta property="og:image" content="https://upload-images.jianshu.io/upload_images/11007474-8b6c260cd8b3aa5e.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/600">
<meta property="og:image" content="https://upload-images.jianshu.io/upload_images/11007474-b1bfdb5c690d257f.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/600">
<meta property="og:updated_time" content="2018-03-31T13:20:31.483Z">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="进制转换">
<meta name="twitter:description" content="进制转换 二进制与十进制     人类（10进制） 猫咪（2进制）     1 1   2 10   3 11   4 100    算法：例子1例子2：例子3（小数） 0.1（10进制）无法转化为（2二进制）因为0.1在十进制是有限小数二进制中是无限小数 转换进制有可能将有限小数转换为无限小数  二进制与十六进制    十进制 ——&amp;gt; 二进制23（10）——&amp;gt; 10111（2）0.2">
<meta name="twitter:image" content="https://upload-images.jianshu.io/upload_images/11007474-c12d1e39b26d37e1.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/600">



<script type="text/javascript" id="hexo.configurations">
  var NexT = window.NexT || {};
  var CONFIG = {
    root: '/',
    scheme: 'Muse',
    version: '5.1.4',
    sidebar: {"position":"left","display":"post","offset":12,"b2t":false,"scrollpercent":false,"onmobile":false},
    fancybox: true,
    tabs: true,
    motion: {"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}},
    duoshuo: {
      userId: '0',
      author: 'Author'
    },
    algolia: {
      applicationID: '',
      apiKey: '',
      indexName: '',
      hits: {"per_page":10},
      labels: {"input_placeholder":"Search for Posts","hits_empty":"We didn't find any results for the search: ${query}","hits_stats":"${hits} results found in ${time} ms"}
    }
  };
</script>



  <link rel="canonical" href="http://yoursite.com/2018/03/20/二.进制转换/"/>





  <title>进制转换 | From's blog</title>
  








</head>

<body itemscope itemtype="http://schema.org/WebPage" lang="default">

  
  
    
  

  <div class="container sidebar-position-left page-post-detail">
    <div class="headband"></div>

    <header id="header" class="header" itemscope itemtype="http://schema.org/WPHeader">
      <div class="header-inner"><div class="site-brand-wrapper">
  <div class="site-meta ">
    

    <div class="custom-logo-site-title">
      <a href="/"  class="brand" rel="start">
        <span class="logo-line-before"><i></i></span>
        <span class="site-title">From's blog</span>
        <span class="logo-line-after"><i></i></span>
      </a>
    </div>
      
        <p class="site-subtitle"></p>
      
  </div>

  <div class="site-nav-toggle">
    <button>
      <span class="btn-bar"></span>
      <span class="btn-bar"></span>
      <span class="btn-bar"></span>
    </button>
  </div>
</div>

<nav class="site-nav">
  

  
    <ul id="menu" class="menu">
      
        
        <li class="menu-item menu-item-home">
          <a href="/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-home"></i> <br />
            
            Home
          </a>
        </li>
      
        
        <li class="menu-item menu-item-archives">
          <a href="/archives/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-archive"></i> <br />
            
            Archives
          </a>
        </li>
      

      
    </ul>
  

  
</nav>



 </div>
    </header>

    <main id="main" class="main">
      <div class="main-inner">
        <div class="content-wrap">
          <div id="content" class="content">
            

  <div id="posts" class="posts-expand">
    

  

  
  
  

  <article class="post post-type-normal" itemscope itemtype="http://schema.org/Article">
  
  
  
  <div class="post-block">
    <link itemprop="mainEntityOfPage" href="http://yoursite.com/2018/03/20/二.进制转换/">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="name" content="Wang hang">
      <meta itemprop="description" content="">
      <meta itemprop="image" content="/images/avatar.gif">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="From's blog">
    </span>

    
      <header class="post-header">

        
        
          <h1 class="post-title" itemprop="name headline">进制转换</h1>
        

        <div class="post-meta">
          <span class="post-time">
            
              <span class="post-meta-item-icon">
                <i class="fa fa-calendar-o"></i>
              </span>
              
                <span class="post-meta-item-text">Posted on</span>
              
              <time title="Post created" itemprop="dateCreated datePublished" datetime="2018-03-20T22:12:43+08:00">
                2018-03-20
              </time>
            

            

            
          </span>

          

          
            
          

          
          

          

          

          

        </div>
      </header>
    

    
    
    
    <div class="post-body" itemprop="articleBody">

      
      

      
        <h1 id="进制转换"><a href="#进制转换" class="headerlink" title="进制转换"></a>进制转换</h1><ul>
<li>二进制与十进制</li>
</ul>
<table>
<thead>
<tr>
<th>人类（10进制）</th>
<th style="text-align:left">猫咪（2进制）</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td style="text-align:left">1</td>
</tr>
<tr>
<td>2</td>
<td style="text-align:left">10</td>
</tr>
<tr>
<td>3</td>
<td style="text-align:left">11</td>
</tr>
<tr>
<td>4</td>
<td style="text-align:left">100</td>
</tr>
</tbody>
</table>
<p>算法：<br>例子1<br><img src="https://upload-images.jianshu.io/upload_images/11007474-c12d1e39b26d37e1.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/600" alt="image.png"><br>例子2：<br><img src="https://upload-images.jianshu.io/upload_images/11007474-8b6c260cd8b3aa5e.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/600" alt="image.png"><br>例子3（小数）<br><img src="https://upload-images.jianshu.io/upload_images/11007474-b1bfdb5c690d257f.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/600" alt="image.png"></p>
<p>0.1（10进制）无法转化为（2二进制）<br><em>因为0.1在十进制是有限小数</em><br><em>二进制中是无限小数</em></p>
<p><strong>转换进制有可能将有限小数转换为无限小数</strong></p>
<ul>
<li>二进制与十六进制  </li>
</ul>
<p>十进制 ——&gt; 二进制<br>23（10）——&gt; 10111（2）<br>0.25（10）——&gt; 0.01（2）</p>
<p>二进制 ——&gt;十六进制，每四个二进制代表一个十六进制数<br>0001 ——&gt; 1，0010 ——&gt; 2，0011 ——&gt; 3，0100 ——&gt; 4，<br>0101 ——&gt; 5，0110 ——&gt; 6，0111 ——&gt; 7，1000 ——&gt; 8，<br>1001 ——&gt; 9，1010 ——&gt; A，1011 ——&gt; B，1100 ——&gt; C，<br>1101 ——&gt; D，1110 ——&gt; E，1111——&gt; F</p>
<p>二进制 ——&gt; 十六进制<br>1001 0001（2）——&gt; 91（16）<br>1101 1011（2）——&gt; DB（16）<br>0001 1101 1011（2）——&gt; 1DB（16）</p>

      
    </div>
    
    
    

    

    

    

    <footer class="post-footer">
      

      
      
      

      
        <div class="post-nav">
          <div class="post-nav-next post-nav-item">
            
              <a href="/2018/03/20/一-自主学习过程中需要掌握的方法/" rel="next" title="自主学习过程中需要掌握的方法">
                <i class="fa fa-chevron-left"></i> 自主学习过程中需要掌握的方法
              </a>
            
          </div>

          <span class="post-nav-divider"></span>

          <div class="post-nav-prev post-nav-item">
            
              <a href="/2018/03/20/三-VSCode安装及配置/" rel="prev" title="VSCode安装及配置">
                VSCode安装及配置 <i class="fa fa-chevron-right"></i>
              </a>
            
          </div>
        </div>
      

      
      
    </footer>
  </div>
  
  
  
  </article>



    <div class="post-spread">
      
    </div>
  </div>


          </div>
          


          

  



        </div>
        
          
  
  <div class="sidebar-toggle">
    <div class="sidebar-toggle-line-wrap">
      <span class="sidebar-toggle-line sidebar-toggle-line-first"></span>
      <span class="sidebar-toggle-line sidebar-toggle-line-middle"></span>
      <span class="sidebar-toggle-line sidebar-toggle-line-last"></span>
    </div>
  </div>

  <aside id="sidebar" class="sidebar">
    
    <div class="sidebar-inner">

      

      
        <ul class="sidebar-nav motion-element">
          <li class="sidebar-nav-toc sidebar-nav-active" data-target="post-toc-wrap">
            Table of Contents
          </li>
          <li class="sidebar-nav-overview" data-target="site-overview-wrap">
            Overview
          </li>
        </ul>
      

      <section class="site-overview-wrap sidebar-panel">
        <div class="site-overview">
          <div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
            
              <p class="site-author-name" itemprop="name">Wang hang</p>
              <p class="site-description motion-element" itemprop="description"></p>
          </div>

          <nav class="site-state motion-element">

            
              <div class="site-state-item site-state-posts">
              
                <a href="/archives/">
              
                  <span class="site-state-item-count">52</span>
                  <span class="site-state-item-name">posts</span>
                </a>
              </div>
            

            

            
              
              
              <div class="site-state-item site-state-tags">
                
                  <span class="site-state-item-count">2</span>
                  <span class="site-state-item-name">tags</span>
                
              </div>
            

          </nav>

          

          

          
          

          
          

          

        </div>
      </section>

      
      <!--noindex-->
        <section class="post-toc-wrap motion-element sidebar-panel sidebar-panel-active">
          <div class="post-toc">

            
              
            

            
              <div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#进制转换"><span class="nav-number">1.</span> <span class="nav-text">进制转换</span></a></li></ol></div>
            

          </div>
        </section>
      <!--/noindex-->
      

      

    </div>
  </aside>


        
      </div>
    </main>

    <footer id="footer" class="footer">
      <div class="footer-inner">
        <div class="copyright">&copy; <span itemprop="copyrightYear">2018</span>
  <span class="with-love">
    <i class="fa fa-user"></i>
  </span>
  <span class="author" itemprop="copyrightHolder">Wang hang</span>

  
</div>


  <div class="powered-by">Powered by <a class="theme-link" target="_blank" href="https://hexo.io">Hexo</a></div>



  <span class="post-meta-divider">|</span>



  <div class="theme-info">Theme &mdash; <a class="theme-link" target="_blank" href="https://github.com/iissnan/hexo-theme-next">NexT.Muse</a> v5.1.4</div>




        







        
      </div>
    </footer>

    
      <div class="back-to-top">
        <i class="fa fa-arrow-up"></i>
        
      </div>
    

    

  </div>

  

<script type="text/javascript">
  if (Object.prototype.toString.call(window.Promise) !== '[object Function]') {
    window.Promise = null;
  }
</script>









  












  
  
    <script type="text/javascript" src="/lib/jquery/index.js?v=2.1.3"></script>
  

  
  
    <script type="text/javascript" src="/lib/fastclick/lib/fastclick.min.js?v=1.0.6"></script>
  

  
  
    <script type="text/javascript" src="/lib/jquery_lazyload/jquery.lazyload.js?v=1.9.7"></script>
  

  
  
    <script type="text/javascript" src="/lib/velocity/velocity.min.js?v=1.2.1"></script>
  

  
  
    <script type="text/javascript" src="/lib/velocity/velocity.ui.min.js?v=1.2.1"></script>
  

  
  
    <script type="text/javascript" src="/lib/fancybox/source/jquery.fancybox.pack.js?v=2.1.5"></script>
  


  


  <script type="text/javascript" src="/js/src/utils.js?v=5.1.4"></script>

  <script type="text/javascript" src="/js/src/motion.js?v=5.1.4"></script>



  
  

  
  <script type="text/javascript" src="/js/src/scrollspy.js?v=5.1.4"></script>
<script type="text/javascript" src="/js/src/post-details.js?v=5.1.4"></script>



  


  <script type="text/javascript" src="/js/src/bootstrap.js?v=5.1.4"></script>



  


  




	





  





  












  





  

  

  

  
  

  

  

  

</body>
</html>
